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What is a most appropriate program to conduct territories sales?

Let me explain:
With a group as well as fielding for a sale to people as well as businesses, we need to know what areas were worked according to a residence of a streets, postal codes as well as cities. For that, we need a program in that we shall lapse a data.
In my case, we do not need to lift a temperament of a customer.
I only need program that allows me to see a map that will arrangement that areas have to be finished as well as those who have already been finished (with a date of course)
Thank we for your response.